TomTom’s QuickGPSfix now available for TomTom ONE

mikealder · Posted: Mon Jan 22, 2007 9:45 pm Post subject:

In that case the US page is correct then (I cannot believe I am actually saying the site is correct) - must be a mistake somewhere Laughing

, TomTom don't sell the 710 over there, its just the 510/910 - Mike

jzerocsk · Occasional Visitor Joined: Jan 02, 2007 Posts: 33

[quote="BGF"]

JockTamsonsBairn · Posted: Mon Jan 22, 2007 11:56 pm Post subject:

oldfogy · Posted: Tue Jan 23, 2007 10:57 pm Post subject:

As this "QuickFix" is a weekly update from TT, I wonder which day of the week they will issue a new update?

If it issued for arguments sake on a Friday, but you only ever connect on a Thursday then it's of no use at all!
_________________
(If it ain't broke, I can soon fix it)

wibbly · Frequent Visitor Joined: Dec 20, 2003 Posts: 315

Hopefully daily, but with a week's validy for each download (ie a 'rolling week'). TT suggest 'at least once a week' - I think if it had to be a specific day that would indeed be problematic...

Or maybe it's a live 'feed' of satellite data - essentially as up to date as you'd get from the satellites themselves from your TT.

timber · Posted: Tue Jan 23, 2007 11:24 pm Post subject:

oldfogy · Posted: Tue Jan 23, 2007 11:25 pm Post subject:

Wibbly.

Thats what I hoped it may be, but until it is verified by TT I suppose we must live and wait in hope.
_________________
(If it ain't broke, I can soon fix it)

Scoobydooby · Regular Visitor Joined: Feb 19, 2006 Posts: 104

I have 3 SD cards for my TT ONE :-

1. The original supplied card--safely tucked away as a last resort backup.
2. 2Gb card for daily use containing my European maps.
3. 1Gb card ready for my holiday containing full USA maps.

Will I have to connect to TomTom Home 3 times? , once with each SD card, so that it will download QGPSF 3 times, or will the TT's firmware be flashed up the first time, so that its a one shot upgrade.

Second question, when I arrive in the USA, I assume that I will have a long fix as TT wont know where I am ?( ironically, thats just the very time when I want it to latch on quickly!!).

I dont know whether to upgrade or not--I'm quite happy with fix times as they are, Has anyone noticed any drawbacks to updating with QuickGPSfix?

Scuse my ignorance re above

Scoobs
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Tom Tom Go 510 (new model)

I'd be lost without it !!

Arimus · Posted: Wed Jan 24, 2007 11:04 pm Post subject:

Just been digging through the darker corners of my mind and satelite almanac data is transmitted in the L1 data stream and is usually valid for a month or longer. So what does the Tomtom service give that the sat's don't? Or is the info from TT the empheris data? Again this is part of the L1 data stream but usually is of short duration.

Also does the TT data include data on outages etc?

entwood · Regular Visitor Joined: Jul 31, 2005 Posts: 117

Not being picky ... really .... Smile

but it is EPHEMERIS Smile

and for those who don't know what that is ...

http://www.garmin.com/aboutGPS

Arimus · Posted: Thu Jan 25, 2007 8:06 am Post subject:

My bad - I don't do spelling ;) (And the darker corners of my mind where I store redundant info is even worse than the rest for spelling).

alan_dr · Posted: Thu Jan 25, 2007 10:22 am Post subject:

I see that the ephemeris data is stored in a folder called ephem on the SD card. However, this folder does not seem to be backed up via TT Home. I checked for updates and no new Home software is available - I'm on 1.3. Do you think this may be a problem if I need to restore?
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Alan - iPhone 5 64GB, with CamerAlert, TomTom Europe & CoPilot

Arimus · Posted: Thu Jan 25, 2007 11:06 am Post subject:

Not really.
Taking a slight guess here but based on 'normal' gps devices...
After a full reset the device won't know where it is in the world and so knowing the ephemeris data for the sat's isn't going to be much use as it won't know which sat's it should be seeing until it has worked out where it is. As the ephemeris data is transmitted as part of the routine signalling from the gps constellation then after the initial first fix you should be ok.

wibbly · Frequent Visitor Joined: Dec 20, 2003 Posts: 315

Arimus · Posted: Thu Jan 25, 2007 12:28 pm Post subject:

Almanac data and ephemeris data are timestamped so if the validity period of the a/e data set is outside of the current time then it will not use them (or atleast shouldn't).

If the device has been hard reset I would hope/expect that all alamanacs and ephemeris data has been cleared out...

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